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Figure 4
Single tetra­hedral layer with six-membered rings in a projection along [100]. T-sites in the centres of the tetra­hedra are shown in blue. Displacement ellipsoids are drawn at the 70% probability level.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 76| Part 5| May 2020| Pages 664-667
https://doi.org/10.1107/S205698902000496X
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